Calvin Johnson Rule (2010)
Chicago defeated the Lions in 2010 but it could have been very different. Detroit is possibly the unluckiest franchise in the NFL and appears many times on this list. In this case, the league coined a new phrase because of an incident in the game. Calvin Johnson scored a touchdown but the officials ruled that it was an incomplete pass.
They said that the ball left his hand after it touched the ground. This ignited a massive debate over what constituted a catch and the NFL intervened to clarify matters. Incredibly, everything must be perfectly explained or there will be drama. Welcome to the NFL (via NBC Sports).